class DataModel:
    @staticmethod
    def main():
        DataModel.id_type()

    @staticmethod
    def id_type():
        # 对象，类型和值
        i: int = 100
        print(f'id (address of the variable) = {id(i)}, type = {type(i)}, value = {i}')


if __name__ == "__main__":
    DataModel.main()
